551235040 has 48 divisors (see below), whose sum is σ = 1323665280. Its totient is φ = 216875520.

The previous prime is 551235029. The next prime is 551235059. The reversal of 551235040 is 40532155.

It is a junction number, because it is equal to n+sod(n) for n = 551234996 and 551235014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18480 + ... + 37999.

It is an arithmetic number, because the mean of its divisors is an integer number (27576360).

Almost surely, 2^551235040 is an apocalyptic number.

It is an amenable number.

551235040 is an abundant number, since it is smaller than the sum of its proper divisors (772430240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551235040 is a wasteful number, since it uses less digits than its factorization.

551235040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56555 (or 56547 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 551235040 is about 23478.3951751392. The cubic root of 551235040 is about 819.9340815541.

Adding to 551235040 its reverse (40532155), we get a palindrome (591767195).

The spelling of 551235040 in words is "five hundred fifty-one million, two hundred thirty-five thousand, forty".